Okla. Stat. tit. 47 § 2-143
There is hereby created in the State Treasury a revolving fund for the Department of Public Safety, to be designated the "Department of Public Safety Patrol Vehicle Revolving Fund". The fund shall be a continuing fund, not subject to fiscal year limitations. All monies accruing to the credit of the fund are hereby appropriated and shall be budgeted and expended by the Department for the purpose of purchasing, equipping, and maintaining of patrol vehicles and patrol aircraft and for any other purpose related to the duties and responsibilities of the Transportation Division of the Department, as well as any other operational expenses of the Oklahoma Highway Patrol. No monies shall be expended from this fund without expressed authorization by the Legislature. Expenditures from said fund shall be made upon warrants issued by the State Treasurer against claims filed as prescribed by law with the Director of the Office of Management and Enterprise Services for approval and payment.
Okla. Stat. tit. 47, § 2-143